Combined door knob and bell.



` Patented May- 20, |902.

No. 700,68I.

J. W. FREEMAN.- COMBINED D008 KNOB AND BELL.

(Application filed Dee. 9, 1901.)

(No Modal.)

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UNITED Y STATES-` PATENT EEICE.

JOHN XVESLEY FREEMAN, OF DENVER, COLORADO, ASSIGNOR OF ONE-HALF TO SILASI3, A. HAYNES, OF DENVER, COLORADO.

COMBINED DOOR KNOB AND BELL.

SPECIFICATION forming part of Letters Patent No. 700,681, dated May 20,1902.

Application filed December 9,1901. Serial No. 85,246. (No model.)

To ctZZ whom, 7225 nfl/tty concern: v

Be it known that I, JOHN WESLEY FREE- MAN, a citizen of the UnitedStates, residing at Denver, in the county of. Arapahoe and State ofColorado, have invented a new and useful Combined Door Knob and Bell, ofwhich the following is a specication.

The invention relates to'improvements in combined door bells and knobs.

The object ot the present invention is to improve the construction otcombined door knobs and bells and to increase theirstrength, durability,and efciency and-to provide an eX- ceedingly simple and inexpensive oneadapted to be readily operated by simply depressing a button and capableot affording ready access to the interior.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated` iu theaccompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1`is a longitudinal sectional `View of acombined door knob and bell constructed in accordance with thisinvention, the depressible button being extended and the parts being inposition for operation. Fig. 2 is a detail view ofthe inner knob and thebell-ringing mechanism, illustrating the arrangementof the parts afterthe button has been depressed. Fig. 3 is a sectional view taken at rightangles to Fig. 2.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

1 designates an outer knob secured by a screw 2 in the ordinary manner`to the outer end of a knob-spindle 3, which is hollow, preferably bybeing grooved, for the reception of a reciprocating rod 4, which isconnected at its inner end with the bell-ringing mechanism. The outerportion of the reciprocating rod, which is preferably round, is providedwith screw-threads -.for the reception ofn an adjustable head or button6, having an interiorly-threaded sleeve 7, which' engages'the threadedouter portion of/tho rod and which is adapted to be adj ustedlongitudinally thereof to arrange the parts to suit the thickness of adoor and to secure the necessary reciprocatiou of the rod. The outenknob is provided with'a central aperture 8,through which passes thesleeve and the outer portion of the rod, and the button or head isarranged on the exterior of Vthe outer knob andis adapted to be readilypushed inward to rin'g the bell formed by the inner knob The inner knob9, which is adjustably secured to the inner end of the knob-spindle by ascrew 10, is composed of an inner main sec- 6o tion and an outer section10, which is secured by a screw 1l or other suitable fastening device tothe outer end of a bracket or support 12. The bracket 12 supports thebell-ringing mechanism and is provided at its inner end with an exteriorthreaded tubular shank or sleeve 13, which screws into a threadedportion of the inner or main' section of the inner knob and which isadapted to be readily unscrewed therefrom to enable the bracket to be 7oremoved. The bracket is adapted by this construction to be readilyremoved from and applied to the door-knob Without detaching the samefrom the door, and should it become necessary to remove the bell-ringingmechanism it will be only necessary to unscrew the pushbutton from theouter end of the reciprocating rod and then unscrew the bracket. Theouter section of the inner knob, the bracket, and the rod may thenbereadilyremoved. The 8o outer section of the inner knob may be ixed tothe bracket to facilitate unscrewing the same, or it may be permitted torotate freely on the bracket to preventthe latter from beingaccidentally unscrewed by the turning of the inner knob. The outersectionfof the inner knob may constitutethe bell, 'or the bell-hammer,hereinafter'described, may be arranged to hit either or bothsections ofthe inner knob. l

The rod 4 has a lattened inner end or portion let and is provided withan arm 15, to which is connected one end of a coiled spring 16,.which issecured at its other end to an arm or projection 17 of the bracket,andwhen 95 the push-button and therodaremovedfin- `Ward the coiledspring will be Ydistendedand will return the parts to theirinitialposition as soon as pressure is removed from the pushbutton. The arms 15and 17 may be of any loo desired construction and may be provided witheyes or hooks for engaging loops or eyes of the spring.

The flattened inner end of the reciprocating rod is provided with anaperture or slot 18, through which passes one arm of a resilientbell-crank lever 19, which forms a bellhammer and which is provided atits angle with a spring-coil 20, arranged on the pivot or stud 21. Thearm 22 of the bell-crank lever is provided with a hammer-head 23 and isadapted to be oscillated to throw the head from one side of the knob tothe other, and the head by varying the length of the arm 22 may bearranged to strike eithervor both sections of the inner knob. The arm24, which passes through the aperture or slot 18 of the flattenedportion of the reciprocating rod, is approximately L- shaped and isarranged to engage the inner end of the bracket and the flattenedportion of the rod to limit the swing of the bell-crank-lever arm 24 andthe reciprocation of the rod to relieve the arm 22 of pressure, wherebythe said arm 22 is permitted to vibrate when contacting with the bell ofthe inner knob. When the pushbutton is moved inward, the reciprocatingrod throws the bell-hammer against one side of the bell of the innerknob and the coiled spring moves the rod outward or backward and throwsthe bell-hammer against the opposite side of the bell. By thisconstruction apositive and efticient alarm or ringing of the bell iseffected by simply pushing the button. The arm 22 is preferably bentslightly, as shown in Fig. 3 of the drawings, to arrange the hammer-headin line with the center of the inner knob. The coiled spring isdetachably secured to the arms of the reciprocating rod and the bracket,and it will be apparent that the combined door knob and bell, which iscomposed of but few parts, is readily assembled and that the simplicityof the device enables it to be cheaply manufactured. It will also beapparent that the combined door knob and bell is adapted to be readilysublstituted` for the ordinary door-knob.

combination of an inner knob composed of inner and outer sections, abracket connecting the sections, a reciprocating spring-actuated rodprovided with an opening, and a resilient bellcrank lever fulcrumed onthe bracket and provided at one arm with a head,

the other arm of the bell-crank lever being extended through the openingof the reciprocating rod and arranged to engage the latter when the rodis moved inward, whereby the swing of the bell-hammer is limited, therodengaging arm of the bell-crank lever being also arranged to engagethe bracket to limit the movement of the bell-crank lever when the rodis moved outward, substantially as described.

2. A device of the class described comprising an inner knob having abell, a bracket mounted within the inner knob, a reciprocating rodadapted to be pushed inward, a coiled spring connected with the rod andwith the bracket and adapted to throw the former outward, a pivot orstud mounted on the bracket, and a resilient bell-crank lever providedat its angle with a coil arranged on the pivot or stud, said bell-cranklever being provided at one arm with ahead and having its other armconnected with the rod and arranged to engage the latter to limit themovement of the rod and the bell-hammer, substantially as described.

3. A device of the class described comprising an inner knob having abell, a reciprocating rod adapted to be pushed inward and provided withan aperture, a spring for throwing the rod outward, and a resilientbell-crank lever provided at one arm with a head, the other arm of thebell-crank lever being approximately L-shaped and operating in theaperture of the rod and arranged to engage and limit the movement of thelatter, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JOHN WESLEY FREEMAN.

Witnesses;

J. Ross CoLHoUN, J. H. JocHUM, Jr.

